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Analog Devices Inc./Maxim Integrated MAX4684EBC
- Part No.:
- MAX4684EBC
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFBGA, CSPBGA
- Datasheet:
-
MAX4684EBC.pdf
- Description:
- IC SW SPDT-NO/NCX2 800MOHM 10CSP
- Quantity:
- Payment:
- Shipping:
Inventory:8,134
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Product details
Overview
The MAX4684EBC from Maxim Integrated is a low-voltage, dual single-pole/double-throw (SPDT) analog switch with asymmetrical on-resistance: 0.5Ω (max) for NC and 0.8Ω (max) at +2.7V supply, 50ns turn-on time, and rail-to-rail signal handling. It operates from +1.8V to +5.5V and targets compact audio routing in battery-powered portable devices.
For engineers reviewing the MAX4684EBC datasheet, MAX4684EBC pinout, MAX4684EBC application, or MAX4684EBC equivalent, key selection criteria include NC/NO RON asymmetry, UCSP package footprint (2.0mm × 1.50mm), break-before-make timing (2ns), 1.8V logic compatibility, and low THD (0.03%) for high-fidelity signal paths.
Technical Context
The MAX4684EBC implements two independent SPDT switches with separate digital control inputs (IN1, IN2), each selecting between normally closed (NC) and normally open (NO) analog paths. Its CMOS transmission-gate architecture enables bidirectional signal flow across COM/NO/NC terminals with rail-to-rail voltage support.
Break-before-make switching prevents momentary shorting during state transitions, critical for speaker/headset switching where simultaneous connection could cause pop/click artifacts. The device guarantees RON matching ≤0.06Ω between channels and RON flatness ≤0.15Ω over full signal range, ensuring minimal distortion in audio and precision analog applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NC RON (max) | 0.5Ω at +2.7V - enables low-loss connection for primary audio path (e.g., internal speaker) |
| NO RON (max) | 0.8Ω at +2.7V - optimized for secondary path (e.g., headset output) with controlled impedance mismatch |
| tON/tOFF | 50ns/40ns at +3V - supports fast channel switching in real-time audio routing |
| RON Match | ≤0.06Ω between channels - ensures balanced stereo signal integrity |
| THD | 0.03% - preserves audio fidelity in MP3 players and cellular handsets |
| Supply Range | +1.8V to +5.5V - compatible with Li-ion, NiMH, and regulated 3.3V/5V rails |
| Logic Compatibility | 1.8V input thresholds - interfaces directly with low-voltage microcontrollers without level shifters |
Pinout & Package
The MAX4684EBC uses a 12-bump, 0.5mm-pitch UCSP (Ultra-Chip-Scale Package) measuring 2.0mm × 1.50mm, designed for ultra-dense PCB layouts in space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC1, NC2 | Normally Closed Analog Terminal | Default-connected path when INx = low; used for primary signal routing (e.g., speaker) |
| NO1, NO2 | Normally Open Analog Terminal | Activated path when INx = high; used for alternate routing (e.g., headset) |
| COM1, COM2 | Common Analog Terminal | Bidirectional I/O node shared between NC and NO paths; handles rail-to-rail signals |
| IN1, IN2 | Digital Control Input | 1.8V-logic-compatible TTL/CMOS inputs controlling respective SPDT switch states |
| V+ | Positive Supply Voltage | +1.8V to +5.5V analog/digital supply; powers internal switch circuitry |
| GND | Ground Reference | Analog and digital ground return; must be low-impedance for low-noise operation |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetrical RON | 0.5Ω (NC) / 0.8Ω (NO) enables optimized path loss allocation for speaker vs. headset outputs |
| Rail-to-Rail Signal Handling | Supports analog signals from GND to V+ without clipping - essential for full-swing audio and sensor interfaces |
| Break-Before-Make Timing | 2ns delay prevents transient short-circuits during switching - eliminates audible pops in audio systems |
| Low Crosstalk (-68dB) | Minimizes signal coupling between channels - critical for stereo separation and multi-channel routing |
| Low Leakage Current | 1nA max at +25°C - preserves battery life in always-on portable equipment |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
Use Scenario: Automatically routes audio output between built-in speaker and 3.5mm headset jack based on plug detection. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing isolated, low-distortion signal paths with break-before-make action. Use Value: Eliminates mechanical relays; reduces BOM cost and board area while maintaining <0.03% THD for CD-quality playback. | Use Scenario: Selects between DAC output, line-in, or microphone input in portable music players with dual audio codecs. IC Role / Device Role / Timing Role: Bidirectional analog multiplexer enabling flexible signal path configuration under microcontroller control. Use Value: Asymmetrical RON optimizes insertion loss for speaker (low RON) and headset (higher RON) paths without external resistors. |
| Cellular Phone Baseband Switching | Battery-Operated Equipment Power Routing |
Use Scenario: Routes audio signals between baseband processor, earpiece, loudspeaker, and Bluetooth codec in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Low-voltage analog switch operating from 2.8V–3.3V system rail with 1.8V logic interface to application processor. Use Value: UCSP package (2.0mm × 1.50mm) saves >60% board area versus µMAX; 50ns switching supports rapid call-mode transitions. | Use Scenario: Dynamically connects/disconnects power domains (e.g., display backlight, RF module) to extend battery runtime in handheld instruments. IC Role / Device Role / Timing Role: High-current analog switch (±300mA continuous) with low RON minimizing voltage drop and heat generation. Use Value: 0.5Ω NC path delivers >98% efficiency at 100mA load; 1nA leakage prevents standby current drain in sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4685EBC | Symmetric 0.8Ω RON for both NC and NO paths; identical UCSP-12 package and timing specs | Preferred where matched path loss is required (e.g., differential sensor routing) | Select MAX4685EBC when NC/NO symmetry outweighs the need for optimized speaker/headset loss allocation |
| TMUX1574RSVR | 0.5Ω RON, 12-pin WQFN (2.5mm × 2.5mm), 3.3V-only supply, no 1.8V logic compatibility | Targeted at industrial automation with higher ESD rating (±4kV HBM) | Choose TMUX1574RSVR only if 3.3V system constraint and enhanced robustness justify larger footprint and missing 1.8V logic support |
Compared with MAX4685EBC, the MAX4684EBC provides lower NC-path resistance for priority signal routing, while TMUX1574RSVR trades size and voltage flexibility for ruggedness-making MAX4684EBC optimal for space- and battery-sensitive consumer audio designs.
Availability
MAX4684EBC is available at Aetrix Electronics and suitable for speaker headset switching, MP3 player audio routing, and cellular phone baseband applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX4684EBC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.
The MAX4684EBC belongs to Maxim's low-voltage analog switch product line, engineered specifically for compact, battery-powered portable electronics requiring ultra-small packaging, rail-to-rail signal handling, and low distortion.
FAQ
What is the maximum supply voltage rating for the MAX4684EBC?
The MAX4684EBC has an absolute maximum supply voltage (V+) of +6V, but its operational range is specified from +1.8V to +5.5V. Exceeding +6V risks permanent damage per the Absolute Maximum Ratings table. For reliable long-term operation, maintain V+ within the 1.8V–5.5V range, with typical use at +2.7V or +3.3V to achieve guaranteed RON and timing performance. The MAX4684EBC datasheet explicitly defines this range in the Electrical Characteristics section.
Does the MAX4684EBC support true bidirectional signal flow?
Yes, the MAX4684EBC supports fully bidirectional analog signal flow across all COM/NO/NC terminals due to its CMOS transmission-gate architecture. Signals can pass from COM to NO, NO to COM, COM to NC, or NC to COM with identical RON and distortion characteristics. This is confirmed in the Applications Information section, which states "The switches are bidirectional, so the NO_, NC_, and COM_ pins can be either inputs or outputs." The MAX4684EBC maintains rail-to-rail capability in both directions.
How does the break-before-make timing of the MAX4684EBC prevent audio artifacts?
The MAX4684EBC guarantees a 2ns break-before-make delay, ensuring the NC path fully disconnects before the NO path closes. This eliminates momentary short-circuits between speaker and headset outputs that would otherwise cause audible pops or clicks during switching. The timing is validated under standard test conditions (V+ = +2.7V, RL = 50Ω, CL = 35pF) and is critical for clean transitions in cellular phones and MP3 players. The MAX4684EBC datasheet specifies this parameter in the Dynamic Characteristics table.
What is the thermal profile requirement for soldering the MAX4684EBC UCSP package?
The MAX4684EBC UCSP requires adherence to JEDEC J-STD-020A reflow profile, specifically paragraph 7.6, Table 3 for infrared/vapor-phase reflow. Peak bump temperature must not exceed +220°C (infrared, 15s) or +215°C (vapor phase, 60s). Preheating is mandatory, and hand or wave soldering is prohibited. These constraints are documented in the Absolute Maximum Ratings section and UCSP Reliability Notice of the MAX4684EBC datasheet to ensure solder joint integrity and wafer-level reliability.
Can the MAX4684EBC operate with a 1.8V logic input while powered from a 5V supply?
Yes, the MAX4684EBC digital inputs (IN1, IN2) accept logic levels up to +5.5V regardless of V+ supply voltage. With a 5V V+, VIH is guaranteed at +1.4V and VIL at +0.5V - fully compatible with 1.8V logic families. This allows direct interfacing with low-voltage microcontrollers without level shifters, even when the analog path runs at higher voltage. The MAX4684EBC datasheet confirms this in the Digital I/O section and Applications Information subsection "Digital Control Inputs."
MAX4684EBC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPDT - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 800mOhm
- Channel-to-Channel Matching (ΔRon):
- 60mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 50ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 200pC
- Channel Capacitance (CS(off), CD(off)):
- 84pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -68dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UCSP
MAX4684EBC FAQ
1.How can I place an order for MAX4684EBC through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4684EBC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4684EBC reliable?
The price and inventory of MAX4684EBC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4684EBC is usually 5 days.
3.What payment methods are accepted for MAX4684EBC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4684EBC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4684EBC?
MAX4684EBC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4684EBC order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4684EBC?
For technical support, including MAX4684EBC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4684EBC requirements.
6.How does Aetrix verify that MAX4684EBC is sourced from the original manufacturer or authorized distributors?
All MAX4684EBC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4684EBC meets industry standards.
7.What is the process for return or replacement of MAX4684EBC?
All MAX4684EBC units undergo pre-shipment inspection (PSI). If there is an issue with MAX4684EBC, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4684EBC part is unused and in its original packaging.
Return procedure for MAX4684EBC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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